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Finding the Fourth Proportional to 429.79, 593.08 and 243.26

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Solution

The fourth proportional to 429.79, 593.08 and 243.26 is: 335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.79 : 593.08 = 243.26 : x
  2. Step 2: Convert to fraction form
    429.79/593.08 = 243.26/x
  3. Step 3: Cross multiply
    429.79x = 593.08 × 243.26
  4. Step 4: Simplify right side
    429.79x = 144,272.64
  5. Step 5: Solve for x
    x = 144,272.64/429.79
  6. Step 6: Final answer
    x = 335.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.